/*
*********************************************************************************************************
*                                             uC/GUI V3.98
*                        Universal graphic software for embedded applications
*
*                       (c) Copyright 2002, Micrium Inc., Weston, FL
*                       (c) Copyright 2002, SEGGER Microcontroller Systeme GmbH
*
*              �C/GUI is protected by international copyright laws. Knowledge of the
*              source code may not be used to write a similar product. This file may
*              only be used in accordance with a license and should not be redistributed
*              in any way. We appreciate your understanding and fairness.
*
----------------------------------------------------------------------
File        : GUI__CalcTextRect.c
Purpose     : Implementation of gui function
---------------------------END-OF-HEADER------------------------------
*/

#include <stdlib.h>
#include "GUI_Protected.h"
#include "GUI.h"

/*********************************************************************
*
*       Public code
*
**********************************************************************
*/
/*********************************************************************
*
*       GUI__CalcTextRect
*/
void GUI__CalcTextRect(const char GUI_UNI_PTR* pText, const GUI_RECT* pTextRectIn, GUI_RECT* pTextRectOut, I32 TextAlign)
{
	if (pText) {
		I32 xPos, yPos, TextWidth, TextHeight;

		/* Calculate X-pos of text */
		TextWidth = GUI_GetStringDistX(pText);
		switch (TextAlign & GUI_TA_HORIZONTAL) {
			case GUI_TA_HCENTER:
				xPos = pTextRectIn->x0 + ((pTextRectIn->x1 - pTextRectIn->x0 + 1) - TextWidth) / 2;
			break;
			case GUI_TA_RIGHT:
				xPos = pTextRectIn->x1 - TextWidth + 1;
			break;
			default:
				xPos = pTextRectIn->x0;
			break;
		}

		/* Calculate Y-pos of text*/
		TextHeight = GUI_GetFontDistY();
		switch (TextAlign & GUI_TA_VERTICAL) {
			case GUI_TA_VCENTER:
				yPos = pTextRectIn->y0 + ((pTextRectIn->y1 - pTextRectIn->y0 + 1) - TextHeight) / 2;
			break;
			case GUI_TA_BOTTOM:
				yPos = pTextRectIn->y1 - TextHeight + 1;
			break;
			case GUI_TA_BASELINE:
			default:
				yPos = pTextRectIn->y0;
			break;
		}

		/* Return text rectangle */
		pTextRectOut->x0 = xPos;
		pTextRectOut->y0 = yPos;
		pTextRectOut->x1 = xPos + TextWidth  - 1;
		pTextRectOut->y1 = yPos + TextHeight - 1;
	} else {
		*pTextRectOut = *pTextRectIn;
	}
}

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